drm/msm: Fix 0xfffflub in "Refactor address space initialization"

This week I started seeing GPU crashes on my DragonBoard 845c
which I narrowed down to being caused by commit ccac7ce
("drm/msm: Refactor address space initialization").

Looking through the patch, Jordan and I couldn't find anything
obviously wrong, so I ended up breaking that change up into a
number of smaller logical steps so I could figure out which part
was causing the trouble.

Ends up, visually counting 'f's is hard, esp across a number
of lines:
  0xfffffff != 0xffffffff

This patch corrects the end value we pass in to
msm_gem_address_space_create() in
adreno_iommu_create_address_space() so that it matches the value
used before the problematic patch landed.

With this change, I no longer see the GPU crashes that were
affecting me.

Cc: Shawn Guo <[email protected]>
Cc: Rob Clark <[email protected]>
Cc: Sean Paul <[email protected]>
Cc: Jordan Crouse <[email protected]>
Cc: [email protected]
Fixes: ccac7ce ("drm/msm: Refactor address space initialization")
Signed-off-by: John Stultz <[email protected]>
Signed-off-by: Rob Clark <[email protected]>

Author: johnstultz-work

drivers/gpu/drm/msm/adreno/adreno_gpu.c

@@ -194,7 +194,7 @@ adreno_iommu_create_address_space(struct msm_gpu *gpu,
 	struct msm_gem_address_space *aspace;
 
 	aspace = msm_gem_address_space_create(mmu, "gpu", SZ_16M,
-		0xfffffff);
+		0xffffffff);
 
 	if (IS_ERR(aspace) && !IS_ERR(mmu))
 		mmu->funcs->destroy(mmu);